基于PSO-SVR算法的悬臂式掘进机工作性能预测

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Abstract Research purposes: The roadheader works as an indispensable mechanical equipment in the milling and excavation method. Its working performance is often constrained by the characteristics of surrounding rock and mechanical equipment conditions. To predict the working performance of roadheader, this paper takes the instantaneous cutting rate (ICR) as the evaluation index, comprehensively considers the surrounding rock factors and mechanical equipment factors, and establishes an ICR prediction system based on different algorithms. The support vector machine algorithm based on particle swarm optimization (PSO-SVR) is optimized, which supported the ICR prediction system. This system can efficiently predict the working performance and excavating speed of tunnels excavated by roadheader.
Research conclusions: （1）The data of tunnels excavated by roadheader are used for the training samples of 5 different algorithms. The PSO-SVR algorithm has the best prediction accuracy. （2）The particle swarm optimization is used to search the optimal penalty coefficient C and kernel function coefficient g, which can effectively avoid falling into local optimal solution and significantly improve the prediction accuracy and generalization ability of the model. （3）The ten-fold cross validation results indicate that the PSO-SVR model has better robustness than that of the other four algorithms. （4）Based on the Ganzhou Rongjiang Tunnel, the ICR and excavating speed of the roadheader is accurately predicted by PSO-SVR model, whose prediction accuracy is significantly higher than the empirical formula and other four algorithms, providing reference for the selection of roadheader and the prediction of excavating speed of roadheader.

Key words： roadheader instantaneous cutting rate performance prediction particle swarm optimization support vector machine.

Received: 04 May 2023

PACS:

U455.6

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	Articles by authors
	FU Helin
	ZHAO Yibo
	WANG Lizhi
	GUO Hongyu
	LI Jie
	DENG Huangshi

Cite this article:

FU Helin,ZHAO Yibo,WANG Lizhi, et al. Performance Prediction of Roadheader by PSO-SVR Algorithm[J]. Journal of Railway Engineering Society, 2024, 41(9): 92-98.

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https://tdgcxb.crec.cn/EN/ OR https://tdgcxb.crec.cn/EN/Y2024/V41/I9/92

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